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8th Grade Chapter 6 Lesson 4
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8th Grade Chapter 6 Lesson 4



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    8th Grade Chapter 6 Lesson 4 8th Grade Chapter 6 Lesson 4 Presentation Transcript

    • 8 th Grade Chapter 6 Lesson 4 Pgs. 258-268 For Student Use Only
    • Bird Behavior
      • Bird Singing:
        • Syrnix: organ located at base of birds trachea
          • Creates sound by
            • Causing the air to vibrate
            • Causing the walls to vibrate
      • Bird Calls:
        • Made with syrnix
        • Short characteristic calls specefic to bird species
          • Bird Calls- Encarta
    • Bird Behavior
      • Visual Communication:
        • Besides vocal communication birds also communicate visually
          • Use visual displays- body language
            • Examples:
              • Head Bobbing and Tail Flicking- danger
              • Raising Crest- dominance
              • Wings spread, head up, and bill up- displeasure at rival
              • Head thrust forward, mouth open, and wings drooping- protecting territory
    • Bird Behavior
      • Avian Actions:
        • Bird Baths:
          • Aquatic birds- scoop water on selves
          • Get feathers slightly wet and then shake dry
          • Some birds dust themselves to rid of parasites
          • Sun self to dry or for enjoyment
        • Anting: (not sure why this happens)
          • Ants crawl over bird and into feathers- usually when molting (ants release formic acid which may rid birds of mites, etc.)
    • Bird Behavior
      • Avian Actions:
        • Bird “Baths”:
          • Birds also rub interesting things in feathers (mostly acidic substances , possibly to kill mites)
            • i.e. chokecherries, mothballs, hot chocolate, etc.
        • Mobbing and Fighting:
          • Mobbing: small birds harass a predator away
          • Diving: Mocking birds dive and attack
          • Faking injuries: (Killdeer) to distract predators
          • Rodent running: sneaking away from the nest to draw predators away
    • Bird Behavior
      • Avian Actions:
        • Bird Migration:
          • Travel from one place to another for food, mating, or warmer weather
          • Some birds travel far and other travel short distances
            • Arctic tern travels from one pole to the other
          • Some birds make halting migrations (fly and stay in areas for awhile)
          • Altitudinal Migration: from higher perches to lower perches
    • Bird Behavior
      • Avian Actions:
        • Bird Migration:
          • Flyways: tracks that birds follow from year to year
          • Birds have great senses of direction
          • Birds can recognize landmarks
          • Some birds use constellations to navigate
          • Some birds have built in compasses that sense Earth’s magnetic field
    • Bird Behavior
      • Movie Notes: